Dioecious Sedge
CR

Dioecious Sedge

Carex dioica

Unknown

Photo: iNaturalist: (c) odenwaelder, some rights reserved (CC BY-NC), uploaded by odenwaelder

Overview

Carex dioica, the dioecious sedge, is a species of flowering plant in the genus Carex, native to Iceland, the Faroes, Svalbard, nearly all of Europe, western Siberia, and the Altai. It prefers to live in calcareous fens.

Dioecious Sedge (Carex dioica) is critically endangered primarily due to habitat loss and degradation of its specialized wetland environments. The species requires specific hydrological conditions in calcareous fens and wet meadows, which have been severely reduced through drainage, agricultural intensification, and changes in land management practices.

Threat summary

Habitat

TERRESTRIAL· major

Other threatened species in Cyperaceae

Round-headed Club-rushCR

Round-headed Club-rush

Scirpoides holoschoenus

Unknown
Flat-sedgeVU

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Blysmus compressus

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Tufted Leafless-bulrushVU

Tufted Leafless-bulrush

Trichophorum cespitosum

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obtuse sedgeVU

obtuse sedge

Carex obtusata

Unknown

Frequently asked questions

Why is Dioecious Sedge classified as Critically Endangered?
Dioecious Sedge is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Dioecious Sedge (Carex dioica) is critically endangered primarily due to habitat loss and degradation of its specialized wetland environments. The species requires specific hydrological conditions in calcareous fens and wet meadows, which have been severely reduced through drainage, agricultural intensification, and changes in land management practices.
Where does Dioecious Sedge live?
Dioecious Sedge occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Dioecious Sedge?
The main threats to Dioecious Sedge are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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